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chromium / chromium / src / e933bc3122763a917609d711ad6b7004fd805b88
commite933bc3122763a917609d711ad6b7004fd805b88[log] [tgz]
authorPhilip Rogers <pdr@chromium.org>Wed Jan 05 04:02:38 2022
committerChromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com>Wed Jan 05 04:02:38 2022
tree50309fc8912c9f92629e540c7e70523055bac242
parent2f28807986689bdcfc589bbe5178758bbb16ae04 [diff]
Fix the fundamental compositing bug for video

Compositing should not affect the paint order of video. This patch
changes LayoutMedia to not force a PaintLayer, which caused videos to
draw after non-stacked siblings. PaintLayer is now primarily used for
stacking contexts. A PaintLayer was previously required to support
accelerated videos. CompositeAfterPaint changed the compositing
algorithm to work based on display items and property trees, rather
than PaintLayer, which lets us fix this longstanding bug.

The following new WPT test demonstrates the progression:
  wpt/css/CSS2/normal-flow/video-paint-order.html

Bug: 370604
Change-Id: Ic9348c4c5b5357b0a920943894be641c3f4928f4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3364406
Reviewed-by: Xianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Philip Rogers <pdr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#955549}
4 files changed
tree: 50309fc8912c9f92629e540c7e70523055bac242
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. cloud_print/
  13. codelabs/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. fuchsia/
  23. gin/
  24. google_apis/
  25. google_update/
  26. gpu/
  27. headless/
  28. infra/
  29. ios/
  30. ipc/
  31. jingle/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. weblayer/
  53. .clang-format
  54. .clang-tidy
  55. .eslintrc.js
  56. .git-blame-ignore-revs
  57. .gitattributes
  58. .gitignore
  59. .gn
  60. .mailmap
  61. .rustfmt.toml
  62. .vpython
  63. .vpython3
  64. .yapfignore
  65. AUTHORS
  66. BUILD.gn
  67. CODE_OF_CONDUCT.md
  68. codereview.settings
  69. DEPS
  70. DIR_METADATA
  71. ENG_REVIEW_OWNERS
  72. LICENSE
  73. LICENSE.chromium_os
  74. OWNERS
  75. PRESUBMIT.py
  76. PRESUBMIT_test.py
  77. PRESUBMIT_test_mocks.py
  78. README.md
  79. WATCHLISTS
README.md

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